, could help explain some baffling phenomena, such as why anxiety makes some people want to pace back and forth; why stimulating the vagus nerve, which regulates internal organ functions such as digestion and, may alleviate depression; and why people who exercise regularly report a more positive outlook on life.
Three colored spots on each half of the brain illuminate special areas in the movement areas of the brain that connect to areas involved in thinking, planning and control of basic bodily functions such as heart rate. The hotter the color, the denser the connections. Researchers at Washington University School of Medicine in St. Louis say that these sites represent a nexus between the body and the mind.
To their surprise, they discovered that Penfield's map wasn't quite right. Control of the feet was in the spot Penfield had identified. Same for the hands and the face. But interspersed with those three key areas were another three areas that did not seem to be directly involved in movement at all, even though they lay in the brain's motor area.
"All of these connections make sense if you think about what the brain is really for," Dosenbach said."The brain is for successfully behaving in the environment so you can achieve your goals without hurting or killing yourself. You move your body for a reason. Of course, the motor areas must be connected to executive function and control of basic bodily processes, like blood pressure and pain.
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